185838861156 has 48 divisors (see below), whose sum is σ = 471793964544. Its totient is φ = 56591686656.

The previous prime is 185838861149. The next prime is 185838861157. The reversal of 185838861156 is 651168838581.

It is a self number, because there is not a number n which added to its sum of digits gives 185838861156.

It is not an unprimeable number, because it can be changed into a prime (185838861157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6125460 + ... + 6155723.

It is an arithmetic number, because the mean of its divisors is an integer number (9829040928).

Almost surely, 2^185838861156 is an apocalyptic number.

It is an amenable number.

185838861156 is an abundant number, since it is smaller than the sum of its proper divisors (285955103388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

185838861156 is a wasteful number, since it uses less digits than its factorization.

185838861156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12281300 (or 12281298 counting only the distinct ones).

The product of its digits is 11059200, while the sum is 60.

The spelling of 185838861156 in words is "one hundred eighty-five billion, eight hundred thirty-eight million, eight hundred sixty-one thousand, one hundred fifty-six".